32 bit to 64 bit

I am currently running win 8 pro on a 32 bit system which claims to be 64 bit capable. How can I check that capability ? I have attempted to install win 8 pro 64 bit from an OEM CD but I get an error message that the CD cannor run on this machine. Where do I go from here ?

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 8 Pro with Media Center, 32 bit
Processor: Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz, x64 Family 6 Model 30 Stepping 5
Processor Count: 8
RAM: 3063 Mb
Graphics Card: Microsoft Basic Render Driver, 11 Mb
Hard Drives: C: Total - 228886 MB, Free - 181821 MB; E: Total - 99 MB, Free - 31 MB; F: Total - 476836 MB, Free - 428620 MB;
Motherboard: ASUSTeK Computer INC., P7P55D PRO
Antivirus: Windows Defender, Disabled